<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="lib/jquery-3.4.1.js"></script>
    <style>
        #move {
            width: 200px;
            height: 100px;
            background: red;
            position: absolute;
            left: 40%;
            top: 40%;
            cursor: pointer;
        }
    </style>
</head>

<body>
    <div id="move"></div>
    <script>
        $("#move").mousedown(function(event){
            var spaceX=event.clientX-$(this).offset().left;
            var spaceY=event.clientY-$(this).offset().top;
            $(document).bind('mousemove',function(event){
                var left=event.clientX-spaceX
                var top=event.clientY-spaceY
                $("#move").css({left:left,top})
            })
        })
        $("#move").mouseup(function(){
            $(document).unbind("mousemove")
        })
    </script>
</body>

</html>